Package org.apache.hadoop.hbase.io.compress

Class GzipHFileDecompressionContext

java.lang.Object

org.apache.hadoop.hbase.io.compress.Compression.HFileDecompressionContext

org.apache.hadoop.hbase.io.compress.GzipHFileDecompressionContext

All Implemented Interfaces:

Closeable, AutoCloseable, HeapSize

@Private
public final class GzipHFileDecompressionContext
extends Compression.HFileDecompressionContext

Holds HFile-level settings used by GzipByteBuffDecompressor. It's expensive to pull these from a Configuration object every time we decompress a block, so pull them upon opening an HFile, and reuse them in every block that gets decompressed.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ALLOW_BYTE_BUFF_DECOMPRESSION_KEY
private final boolean	allowByteBuffDecompression
static final long	FIXED_OVERHEAD

Constructor Summary

Constructors

Modifier	Constructor	Description
private	GzipHFileDecompressionContext(boolean allowByteBuffDecompression)

Method Summary

Modifier and Type	Method	Description
void	close()
static GzipHFileDecompressionContext	fromConfiguration(org.apache.hadoop.conf.Configuration conf)
long	heapSize()	Return the approximate 'exclusive deep size' of implementing object.
boolean	isAllowByteBuffDecompression()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

FIXED_OVERHEAD

public static final long FIXED_OVERHEAD

ALLOW_BYTE_BUFF_DECOMPRESSION_KEY

public static final String ALLOW_BYTE_BUFF_DECOMPRESSION_KEY

See Also:

• Constant Field Values

allowByteBuffDecompression

private final boolean allowByteBuffDecompression

Constructor Details

GzipHFileDecompressionContext

private GzipHFileDecompressionContext(boolean allowByteBuffDecompression)

Method Details

isAllowByteBuffDecompression

public boolean isAllowByteBuffDecompression()

fromConfiguration

public static GzipHFileDecompressionContext fromConfiguration(org.apache.hadoop.conf.Configuration conf)

close

public void close()
           throws IOException

Throws:

IOException

heapSize

public long heapSize()

Description copied from interface: HeapSize

Return the approximate 'exclusive deep size' of implementing object. Includes count of payload and hosting object sizings.

toString

public String toString()

Overrides:

toString in class Object